Dear FreeSurfer users,

We are happy to announce the release of a new publicly available dataset of volumetric brain MRI of Alzheimer's patients and age-matched controls: MIRIAD (Minimal Interval Resonance Imaging in Alzheimer's Disease). MIRIAD complements existing datasets such as ADNI by providing a high number of scans for each subject over a range of intervals from 2 weeks up to 2 years and back-to-back scans, enabling reproducibility, symmetry and transitivity assessment of longitudinal measures.

You can find further information and download links at http://miriad.drc.ion.ucl.ac.uk/, and an accompanying publication providing an overview of the study and previous publications at http://dx.doi.org/10.1016/j.neuroimage.2012.12.044 (Malone et al., NeuroImage Vol 70, P33–36)

Registration is required so we can assess impact and notify users of any updates. Please take the time to read the Data Use Agreement at https://www.ucl.ac.uk/drc/research/miriad/Database. Instructions for downloading the entire dataset and demographic and psychology data can be found at https://www.ucl.ac.uk/drc/research/miriad/Downloading.

The release of this data was made possible through the support of the UK Alzheimer's Society and the kind permission of the original study participants and funders. Full acknowledgements can be found at https://www.ucl.ac.uk/drc/research/miriad/Acknowledgements.

Best wishes for your future research, Ian Malone Dementia Research Centre, UCL Institute of Neurology

MIRIAD Team: Dementia Research Centre, UCL Institute of Neurology, UK Centre for Medical Image Computing, UCL, UK NMR Research Unit, UCL Institute of Neurology, UK Wellcome Trust Centre for Neuroimaging, UCL Institute of Neurology, UK